package thread;

class MyThread extends Thread{
    @Override
    public void run() {
        while (true) {
            System.out.println("hello thread!");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}

public class Demo1 {

    public static void main(String[] args) throws InterruptedException {
        MyThread t = new MyThread();
        // 创建线程
        t.start();
        while (true) {
            System.out.println("main");
            Thread.sleep(1000);
        }

    }
}
